32 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



Female. — Body form as in figure 151. Total length 4.3 mm 

 (based on 1 specimen). Greatest width 1.5 mm. Thoracic plates 

 on segments 2-4. Plates of segment 2 small and extending only to 

 about middle of plates of segment 3. Plate of segment 4 covering 

 proximal end of genital segment. Genital segment long (2.6 mm), 

 over one-half the length of body. Posterior border of genital segment 

 with a broad midian sinus. Abdomen (fig. 152) joined ventrally to 

 genital segment and partially concealed dorsally. Abdomen consist- 

 ing of 2 incompletely separated segments. Caudal rami held at 

 distal end of abdomen and bearing 4 terminal setae and 2 subterminal 

 setae on outer corners. Outer terminal seta finely pliunose. 



Oral area with prominent adhesion pads associated with first and 

 second antennae. Adhesion pad of maxilliped evident but some- 

 what reduced. First antenna (fig. 153) 2-segmented and of typical 

 pandarid type. Fu'st segment with 24 spines, most of which are 

 plumose. Last segment with 13 naked setae. Second antenna (fig. 

 154) with small claw at tip and a large adhesion pad. Mouth tube, 

 mandible, and first maxilla of usual type. Second maxiUa (fig. 155) 

 with usual 3 spines at or near tip. Maxilliped (fig. 156) of usual 

 type and with broad spatulate tip on last segment. 



Abdomen composed of 2 segments. Caudal rami attached distally. 



Remarks. — This copepod was first described by Gnanamuthu in 

 1951 and assigned to the genus Pandarus. On the basis of the 

 diagnostic features of the genus Pandarus I have removed this species 

 and placed it in the genus Pseudopandarus Kirtesinghe, 1950. A 

 comparison of P. gracilis Kii-tesinghe and P. longus (Gnanamuthu) 

 shows the following common features: the aiTangement of the dorsal 

 thoracic plates, the spatulate process of the maxilliped, the prominent 

 first and second antennal adhesion pads with a reduction of the 

 maxilliped pad, the nature of the abdomen and its position in relation 

 to the genital segment, and the free segment of leg 5. 



This species, like P. gracilis, seems to be Indo-Pacific in distribution 

 (Ceylon and Dm^ban, South Africa). So far, it has been reported 

 only from carcharinid sharks. 



Pannosus, new genus 



Type-species: Gangliopus japonicus (Shiino, 1960). 



Female. — Frontal plate distinctly separate. First thoracic seg- 

 ment fused with cephalon. Thoracic segments 2-4 free and possessing 

 dorsal plates. Dorsal plate of segment 3 extending well beyond 

 plates of segment 2. Plates of segment 4 extends well beyond end 

 of plate of segment 3. Plates of segments 3 and 4 fused basaUy. 

 Abdomen 1-segmented. Caudal rami held laterally on abdomen. 

 Adhesion pads of cephalon well developed. First antenna 2-seg- 



